The Mercedes-AMG C63 will be the most radical example of downsizing we've seen in recent times by losing no fewer than four cylinders. Yes, the peeps from Affalterbach are bidding adieu to the 4.0-liter V8 and are replacing it with the M139 engine found in the AMG A45 models. Some big changes are in order as the 2.0-liter four-pot will be mounted longitudinally and its output will grow from 416 hp to 470 hp.
